Medium 5.5Published Jul 19, 2026

CVE-2026-64157netfs: Fix partial invalidation of streaming-write folio

Updated under an hour ago (Oct 26, 2026, 10:10 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix partial invalidation of streaming-write folio In netfs_invalidate_folio(), if the region of a partial invalidation overlaps the front (but not all) of a dirty write cached in a streaming write page (dirty, but not uptodate, with the dirty region tracked by a netfs_folio struct), the function modifies the dirty region - but incorrectly as it moves the region forward by setting the start to the start, not the end, of the invalidation region. Fix this by setting finfo->dirty_offset to the end of the invalidation region (iend).

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jul 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from cce6bfa6ca0e30af9927b0074c97fe6a92f28092 before f6b2569ae29b666fd15ff2848684c445ba442a39; from cce6bfa6ca0e30af9927b0074c97fe6a92f28092 before 3d9601c029b934b5b6a10f99791467b10eb6b211; from cce6bfa6ca0e30af9927b0074c97fe6a92f28092 before 6a3d27116be2c5fb9a03d5cf37c486ac517f3689; from cce6bfa6ca0e30af9927b0074c97fe6a92f28092 before 6d91acc7fb85d33ea58fca9b964a32a453937f4b; e2814004138a541110d4b2dc254a8f619c2c4ce0; from 6.10.8 before 6.11	CNA record
linux linux_kernel linux:linux_kernel	from 6.10.8 before 6.11; from 6.11.1 before 6.12.92; from 6.13 before 6.18.34; from 6.19 before 7.0.11; 6.11; 6.11; 6.11; 7.1; and 3 more ranges	NVD

References

References

https://git.kernel.org/stable/c/f6b2569ae29b666fd15ff2848684c445ba442a39	patch
https://git.kernel.org/stable/c/3d9601c029b934b5b6a10f99791467b10eb6b211	patch
https://git.kernel.org/stable/c/6a3d27116be2c5fb9a03d5cf37c486ac517f3689	patch
https://git.kernel.org/stable/c/6d91acc7fb85d33ea58fca9b964a32a453937f4b	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.